TY  - JOUR
AU  - Brinkmann, Gunnar
AU  - McKay, Brendan D.
TI  - Counting unlabelled topologies and transitive relations
JO  - Journal of integer sequences
PY  - 2005
VL  - 8
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JIS_2005__8_2_a6/
LA  - en
ID  - JIS_2005__8_2_a6
ER  -